In fact, many industries require water in the production process, thus generating sewage and wastewater. Moreover, to ensure the safe and zero discharge of these wastewater, some essential work still cannot be omitted. This article will provide a brief understanding of the wastewater from paper mills and familiarize oneself with the issue of zero discharge of wastewater in the paper mill industry.
We know that the papermaking industry generates a large amount of wastewater, with organic matter accounting for 25% of industrial wastewater. It can be said that the impact on the natural environment is quite significant. Therefore, corresponding measures should be taken to achieve zero discharge of wastewater as much as possible. This way, the goal of increasing production and reducing emissions can be achieved. In addition, it can also improve the economic benefits of the papermaking industry Form a good social and environmental benefit.
Take pulp and papermaking as an example. The wastewater it generates contains high levels of BOD, fiber suspended solids, dimethyl sulfur and colored pollutants, all of which can cause serious pollution to the natural environment. In addition, it will also contain black liquor and white water. What the staff need to do is to treat the pollutants in the wastewater and reduce the impurity content in the wastewater until it meets the standards. In addition, for some chemical substances in the wastewater, the fact that they are invisible to the naked eye does not mean they are harmless. At this time, what needs to be done is to confirm what polluting chemical substances are contained in the wastewater, carry out corresponding treatment of the wastewater, and then use a water quality detector to monitor various indicators in the water in real time, so as to determine whether all indicators meet the standards.
In fact, to achieve zero discharge of papermaking wastewater, the main task is to recycle and reuse the wastewater. Of course, online water quality monitoring still needs to be carried out.
